Fuel cell cooling system filter

Abstract

The utility model discloses a fuel cell cooling system filter in the field of fuel cells, which comprises an outer pipe body, a sleeve-shaped filter screen is coaxially arranged in the outer pipe body, and the sectional area of the filter screen is gradually reduced from one end close to an inlet of the outer pipe body to one end close to an outlet of the outer pipe body. A positioning reinforcing assembly I and a positioning reinforcing assembly II are respectively arranged at the front end and the rear end of the filter screen; the outer pipe body is made of stainless steel; and the filter screen is a 316L stainless steel filter screen with 150 meshes. Flow resistance can be reduced, the structural stability of the filter screen is improved, impurities in a pipeline are efficiently filtered, and a cooling flow field of a fuel cell is guaranteed to be smooth.

Description

Technical Field

[0001] This utility model belongs to the field of fuel cells, and specifically relates to a filter for a fuel cell cooling system. Background Technology

[0002] Impurities are generated in the coolant of a fuel cell during operation, and the presence of these impurities can severely affect the efficiency of the fuel cell.

[0003] In the prior art, there is a pipeline filter for a fuel cell system, with patent application number 201621016699.1 and application date of August 31, 2016. Its structure includes: a pipe body, the inlet of which is connected to an ion purifier, and the outlet connected to a cooling pipeline entering the fuel cell system for the flow of cooling fluid; and a filter screen disposed within the pipe body for filtering impurities in the pipeline. This filter can filter impurities in the pipeline, but its shortcomings are: the resistance to cooling fluid flow within the pipe body is relatively high, and the lack of support between the filter screen and the pipe body leads to structural instability of the filter screen, making it prone to deformation. Utility Model Content

[0004] The purpose of this invention is to provide a filter for a fuel cell cooling system that can reduce flow resistance, improve the structural stability of the filter screen, achieve efficient filtration of pipeline impurities, and ensure smooth cooling flow in the fuel cell.

[0005] The purpose of this utility model is achieved as follows: a filter for a fuel cell cooling system includes an outer tube body, and a sleeve-shaped filter screen is coaxially arranged inside the outer tube body. The cross-sectional area of ​​the filter screen decreases from the end near the inlet of the outer tube body to the end near the outlet of the outer tube body. The front and rear ends of the filter screen are respectively provided with a positioning reinforcement component one and a positioning reinforcement component two.

[0006] In operation, the cooling fluid enters through the inlet of the outer tube. The filter screen is frustoconical in shape, and after being filtered, the cooling fluid exits through the outlet of the outer tube. Compared with the prior art, the advantages of this invention are: the cumulative pore area of ​​the filter screen is not less than the cross-sectional area of ​​the outer tube, resulting in low flow resistance, low conductivity, low ion precipitation, simple structure, low cost, and reusability; the positioning and reinforcing components ensure a firm connection between the filter screen and the outer tube, making the structure more stable.

[0007] As a further improvement of this utility model, the outer tube is made of stainless steel.

[0008] As a further improvement of this utility model, the filter screen is a 150-mesh 316L stainless steel filter screen, with an open front end and a closed rear end. The filter screen has a good filtration effect on cooling fluid.

[0009] To improve the connection between the filter screen and the outer tube, making the filter screen structure more stable, the first positioning reinforcement component is an annular outer step fixed to the outer periphery of the front end of the filter screen, which is welded to the inner wall of the outer tube. The second positioning reinforcement component includes a positioning ring fixed to the outer periphery of the rear end of the filter screen. Several connecting rods are evenly distributed circumferentially between the outer periphery of the positioning ring and the inner wall of the outer tube. The connecting rods are radially arranged. Several crisscrossing support rods are provided at the rear end of the positioning ring, supporting the rear end of the filter screen. Both ends of the support rods have inclined connecting parts, which are fixed to the positioning ring. The outer step ensures that the fluid passes through the filter screen for filtration, and the positioning ring and support rods improve the stability and strength of the filter screen.

[0010] To make the installation of the outer tube body more convenient, the outer tube body is provided with two corresponding annular ribs on the outer periphery, and the length of the filter screen is less than the length of the outer tube body. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0013] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0014] Figure 4 This is the front view of the second positioning reinforcement component inside the outer tube.

[0015] The components include: 1. outer tube body; 2. filter screen; 3. outer step; 4. positioning ring; 5. connecting rod; 6. support rod; 6a. connecting part; and 7. rib. Detailed Implementation

[0016] like Figure 1-4 As shown, a filter for a fuel cell cooling system includes an outer tube 1 made of stainless steel. A sleeve-shaped filter screen 2 is coaxially arranged inside the outer tube 1. The cross-sectional area of ​​the filter screen 2 decreases from the end near the inlet of the outer tube 1 to the end near the outlet. The filter screen 2 is a 150-mesh 316L stainless steel filter screen. The front end of the filter screen 2 is open, and the rear end is closed. The filter screen 2 provides good filtration of the cooling fluid. Positioning reinforcement component one and positioning reinforcement component two are respectively provided at the front and rear ends of the filter screen 2.

[0017] To improve the connection between the filter screen 2 and the outer tube 1, and to make the filter screen structure more stable, the first positioning reinforcement component is an annular outer step 3 fixed to the outer periphery of the front end of the filter screen 2. The outer step 3 is welded and fixed to the inner wall of the outer tube 1. The second positioning reinforcement component includes a positioning ring 4 fixed to the outer periphery of the rear end of the filter screen 2. Several connecting rods 5 are evenly distributed circumferentially between the outer periphery of the positioning ring 4 and the inner wall of the outer tube 1. The connecting rods 5 are radially arranged. Several cross-shaped support rods 6 are provided at the rear end of the positioning ring 4. The support rods 6 support the rear end of the filter screen 2. Both ends of the support rods 6 are provided with inclined connecting parts 6a, which are fixed to the positioning ring 4. The outer step 3 ensures that the fluid passes through the filter screen 2 to complete the filtration. The positioning ring 4 and the support rods 6 improve the stability and firmness of the filter screen 2.

[0018] To make the installation of the outer tube 1 more convenient, two annular ribs 7 corresponding to the front and rear are provided on the outer periphery of the outer tube 1, and the length of the filter screen 2 is less than the length of the outer tube 1.

[0019] In operation, the cooling fluid enters through the inlet of the outer tube 1. The filter screen 2 is frustoconical in shape. After being filtered by the filter screen 2, the cooling fluid is discharged from the outlet of the outer tube 1. The advantages of this invention are: the cumulative pore area of ​​the filter screen 2 is not less than the cross-sectional area of ​​the outer tube 1, resulting in low flow resistance, low conductivity, low ion precipitation, simple structure, low cost, and reusability; the outer step 3 ensures that the fluid passes through the filter screen 2 for filtration; the positioning ring 4 and the support rod 6 improve the stability and firmness of the filter screen 2; the filter screen 2 is firmly connected to the outer tube 1, resulting in a more stable structure.

[0020] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A filter for a fuel cell cooling system, characterized in that, It includes an outer tube body, inside which a sleeve-shaped filter screen is coaxially arranged. The cross-sectional area of ​​the filter screen decreases from the end near the inlet of the outer tube body to the end near the outlet of the outer tube body. The front and rear ends of the filter screen are respectively provided with positioning reinforcement component one and positioning reinforcement component two.

2. A filter for a fuel cell cooling system according to claim 1, characterized in that, The outer tube is made of stainless steel.

3. A filter for a fuel cell cooling system according to claim 1 or 2, characterized in that, The filter screen is a 150-mesh 316L stainless steel filter screen with an open front end and a closed rear end.

4. A filter for a fuel cell cooling system according to claim 1 or 2, characterized in that, The first positioning reinforcement component is an annular outer step fixed to the outer periphery of the front end of the filter screen, and the outer step is welded and fixed to the inner wall of the outer tube. The second positioning reinforcement component includes a positioning ring fixed to the outer periphery of the rear end of the filter screen. Several connecting rods are evenly distributed circumferentially between the outer periphery of the positioning ring and the inner wall of the outer tube. The connecting rods are radially arranged. Several cross-shaped support rods are provided at the rear end of the positioning ring. The support rods support the rear end of the filter screen. Both ends of the support rods are provided with inclined connecting parts, and the connecting parts are fixed to the positioning ring.

5. A filter for a fuel cell cooling system according to claim 1 or 2, characterized in that, The outer tube has two corresponding annular ribs on its outer periphery, and the length of the filter screen is less than the length of the outer tube.

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